Window-screen.



UNITED STATES PATENT OFFICE.

CHARLES M. ANDREWS, OF CARYVILLE, TENNESSEE, ASSIGNOR OF ONE-HALF TOCHARLES M. MOORE, OF GARYVILLE, TENNESSEE.

ROTARY VALVE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

' To all whom it may concern:

Be it known that I, CHARLES M. AN- DREWS, a citizen of the UnitedStates, residing at Caryville, in the county of Campbell and State ofTennessee, have invented new and useful Improvements in Rotary Valves,of which the following is a specification.

This invention relates to rotary valves. I may use my rotary valve withadvantage in various connections, although it is of prime utility whenemployed in connection with a steam engine, as will hereinafter moreparticularly appear.

In the drawings accompanying and forming a part of this s ecification Ishow in detail one form of em odiment of the invention which, to enablethose skilled in the art to practice the same, will be set forth atlength 1n the following description, while the novelty of the inventionwill be included in the claims succeeding said description.

In said drawings I have shown valve mechanism embodying my invention asassociated with or forming part of a doubleacting engine, simply for thepurpose of representing the mode of operation and advantages of thedevice.

.The valve mechanism involvin my invention is simple in construction,efiective and rapid in action, and it has provision for reversing thestroke of the englne.

Referring to said drawings: Figure 1 is a sectional side elevation of adouble-acting engine equipped with valve mechanism embodying myinvention. Fig. 2 is a horizontal sectional plan of the same. Fig. 3 isa perspective vview of the valve box. Fig. 4 is a transverse sectionalelevation of one side of the engine equipped with said valve mechanism,the latter being in section. Fig. 5 is an inside face view of one of thesections of the boxing. Fig. 6 is a horizontal sectional view of thesame. Fig. 7 is an inside face view of the rotary valve. Fig. 8 is ahorizontal sectional view of the same. Fig. 9 is aface view of thereversing valve and also showing a means for oscillating the same. Fig.10 is a sectional view on the line 1010, Fig. 9. Fig. 11 is an insideview of a part of the boxing. Figs. 12, 13 and 14 are diagrammaticsections of certain orts and passages shown in the preceding figures andhereinafter more particularly described.

Like characters refer to like parts throughout the several figures.

In Figs. 1, 2 and 4 of the drawings I have shown a dou le acting steamengine in connection with which my valve mechanism can be advantageouslyemployed. From what has been stated it will be apparent, however, thatthe valve mechanism can be employed with other ty es of steam engines;in fact, it could be use with engines or motors using air, water, gas,or other fluid as the operating medium therefor. I' will brieflydescribe said engine. The latter involves in its make-up twolongitudinally alined cylindersas 2 and 3 set opposite to each other andhaving their inner open ends in proximity. These cylinders 2 and 3 maybe bolted or otherwise secured to the bearing 4 which may consist of ahollow casting and which is mounted on and suitably fastened to the bedor foundation plate 5. This bearing 4 supports for rotatlon the shaft 6carrying flywheels as 7. Said shaft 6 is rovided with two disks as 8connected by t e crank pin 9 jointed to the rods 10 which in turn areconnected with the pistons 11 and 12 operative in the cylinders 2 and 3respectively.

I may arran e above the cylinders 2 and 3 and connect thereto orotherwise suitably mount the hood or cap-plate 13 which preventsscattering of oil or other lubricant by the crank pin 9. The cylinders 2and 3 have respectively longitudinal passages as 14 and 15 for thesupply of steam against the outer faces of the istons 11 and 12respectively therein, and have shown by arrows in Fig. 15 live steam asentering the cylinder 3 by way of the passage 15 and exhaust steamleaving the cylinder 2 by way of the passage 14, the two pistons duringthis time traveling toward the left in Fig. 2. When live steam issupplied into the cylinder 2 by way of the longitudinal passage 14, thelongitudinal passage 15 serves as an exhaust passage and, in such acase, the two pistons 11 and 12 would travel toward the right in saidFig. 2.

The valve mechanism includes in its construction a boxing or casing suchas that denoted in a general way by 16 and shown best in Fig. 3. Saidboxing or casing consists in the present instance of an outer member as17- and an inner member as 18, the two parts being bolted, riveted,screwed, or otherwise connected together at their margins, and each ispreferably, although not necessarily, made of disk or circular form.The'boxing or casing 16 is connected to the frame-work PATENTED NOV. 19,1907.

A, B. ARGTANDER. WINDOW SCREEN.

' APPLICATION FILED 119130. 1906.

2 SHEETS-SHEET 2.

w /y /zw 9M 4 AXEL B. ARGTANDER, Oli ST. PAUL, MINNESOTA.

WINDOW-SCREEN.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed November 30.1906. Serial No. 845.705.

To all whom it may concern:-

Be it known that I, AxEL B. Ano'mxnnn, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Window-Screens, ofwhich the following is a specification.

My invention relates to improvements in window screens, its object beingparticularly to provide a screonso arranged in connection with aslidable sash as to be extended with it when the sash is opened.

. To this end my invention consists in the features of construction andcombination hereinafter particularly described and claimed.

In the accompanying drawings forming art of this s eeilication Fi ure 1is a front elevation of my improved screen, Fig. 2 is a section on line12- 9; of Fig. 1, Figs. 3 and 4 are details of plates for securing thescreen to the sash, Fig. 5 is a detail of a threshold plate, Fig. 6 is asection through the threshold, Fig. 7 is a detail of one end of thescreen holding box, Fig; 8 is an elevation of one end of the screenroll, Fig. 9 is a section on line JJ-U of Fig. 8, and Fig. 10 is anelevation of the op osite end. of the screen roll.

In tie drawings A represents the lower sash, B the frame-work of thewindow and 2 the threshold. Supported below the threshold is a box Cpreferably of metal. The ends of the box are formed with interiordownwardly inclined grooves 3 having sock- .cts 4 at their lower ends toreceive the ends of the roller shaft- 5. The shaft 5 sup )orts a roller6 to which tension is supplied y the coil spring 7 interposed betweenthe roller and shaft. In order to hold the roller under tension until itis placed in the box 1 form one end of the roller shaft and adjacentbear ing in the box with alining openings through which is adapted to bethrusta pin 8. When the rolleris supported within the box the pin 8 maybe withdrawn. Suitably secured to the roller fiisascreen 9 which, whenthe roller is in position in the box, passes upwardly through an opening10 in the threshold plate l l. The threshold plate 11, as shown in Figs.2 and 5, is formed withdownwardly Hanged ends 12 in which-is journaledan anti-frictionv roller 13 forthc screen. The threshold plate issuitably supported in the threshold, as shown in Fig. 2. The free end ofthe screen is formed with an enlargement 14 adapted to slidably fitwithin the socket piece 15 carried by the plate 16. The plate 16 isadapted to be dctachably connected to the lower rail of the sash 8through the medium of plates 17 secured to the lower rail of the sashand formed with slotted openings 18 corresponding with slotted openings19 in the plate 16, through which slotted openings connecting bolts 20are adapted to be assed. The plate 16, also carries downwarc lyextending flanges 21 which strike against the sill plate 11 when thesash is loweicd, preventing the socket piece 14 and the bolts 20 fromstriking the sill plate. The parts being then adj usted to bring thebolts into the narrower portions of the slotted ,openings will firmlyhold the plate 16 secured to the sash.

It will be evident that the screen may be quickly secured to ordisconnected from the plate 16 and that the plate 16 may also be easilysecured to or disconnected from the sash. Nixon the sash is lowered thescreen passes into the box thus being protected froni the weatherso thatwhen the window is closed the screen is entirely out of sight and out ofthe way.

As will be seen by referring to Fig. 2 the screen travels along theinner face of the division strip 22. It will also be evident that myinvention may equally well be applied to the up or sash, in which casethe screen roller will be supported above the window frame.

i 1. The combination with a window frame and sash slidablo therein, of asill plate formed with a longitudinally extending slot, a tension rollersupported below said slot, 9.

screen carried by said roller and passing through said slot, a plateslidably supported at the lower edge of said sash, means carried by saidplate for detachably supporting the free edge of said screen and flangesextending downwardly from the front and rear sides of said plate to apoint below the screen supporling means, for the purpose set forth.

2. The (unnbinat ion with a window frame and sash slidable tluirein, ofa sill plate formed with a longitudinally extending slot, a boxsupported below said plate and formed with inclined inner grooves in itsend walls,

the lotver ends of said grooves having squared portions, a tensionroller having its ends constructed to pass through said grooves and intothe squared portions thereof, a screen carried by said roller andpassing extending slot, a box supported 'elow saidplate, said box beingformed with an inclined groove in its end wall, and. a squared portion10 at the lower end of said groove, a tension roller supported belowsaid slot; the roller end' fitting in the squared end of the groove, aspring shaft for said roller provided with an opening registering withan opening in the adjacent end of the roller, a key fitting 1'5- in saidopenings, a screen carried by said roller and extending through saidslot,'-and a detachable connection between the free end' of said screenand said sash.- y

In testimony whereof I aifix my signature 26 i in presence of twowitnesses.

AXEL B. ABOTANDER.

l/Vitnesses: v-

H. S. Jonnson, HATTIE SMXTH.

